Chemistry Qualitative Analysis of Solubilities HELP

[kirsten_2009]

Chemistry Qualitative Analysis of Solubilities...HELP! :)

Homework Statement

1. Could it be expected that lead chloride would dissolve in dilute nitric acid? Explain your answer please.

2. If in a test tube magnesium chloride solution is added and then some NH3(aq) is added, what would be the species present in the test tube? What would happen if NH4Cl is added? Explain this observation with reference to the equilibrium reactions that exist in the test tube.

I really have no idea...I really would appreciate someone helping me out. Thanks! :)

Homework Equations

The Attempt at a Solution

 

[Nino MMP]

1. Yes, it could be expected that lead chloride would dissolve in dilute nitric acid. This is because nitric acid can act as an oxidizing agent, which will react with the lead chloride, leading to the formation of lead (II) ions and chloride ions. 2. In a test tube with magnesium chloride solution and NH3(aq), the species present would be Mg2+ ions, Cl- ions, NH4+ ions, and OH- ions. When NH4Cl is added, the NH4+ ions will react with the OH- ions to form NH3(aq) and H20. This reaction is driven by Le Chatelier's Principle, as the addition of NH4+ ions shifts the equilibrium towards the right side.